DR.BEI sonic electric toothbrush with 42,000 vibrations per minute for thorough cleaning. Features six brushing modes—novice, gentle, cleaning, whitening, polishing, and massage—to address various dental needs. IPX7 waterproof design allows safe use in shower or bath. Smart 2-minute timer with 30-second intervals guides proper brushing technique. USB rechargeable with soft bristles and replaceable heads. Includes handle, charging cable, and English manual. Choose from 4 or 8 replacement brush heads.